Liquid-elevating system



March 17, 1925. 1,530,066

A. c. WOOD LIQUID ELEVATING SYSTEM Filed Feb. 1, 1922 3 Sheets-Sheet l March 17, 1925.

A. c. wooD LIQUID ELEVATING SYSTEM Filed Febfl, 1922 3 Sheets-Sheet 2 @me/z @717/ March 17, 1925. 1,530,066

A. c. woon LIQUID ELEVATING SYSTEM Filed Feb. l, 1922 5 Sheets-Sheet 5 Patented Mar. 17, 1925.

UNITED sraras ANDREW C. WOOD, OF CHICAGO', ILLINOIS.

LIQUID-ELEVATING SYSTEM."

Application led February'l, 1922. Serial No. 533,287.

' To zZZ whom. t may concern:

`tems, and relates particularly to an ap- Be it known that I, ANDREW Woon, a

citizen of the United States, residing at\.

paratus or system for feeding orsupplying fluid or liquid to meet the required demand, the same being designed to elevate the fluid, if required, or draw the same from any desired point of supply. The device is particularly adapted to drawing gasoline or hydrocarbon from the storage or supply tank and supplying it to the carburetor of an internal combustion engine as required, but its use, however, is not limited to this alone, but it may be used wherever found applicable.

One of the objects of my invention is to provide a constantly operating pump, or similar means, for inducing the fiow of the'liquid from the storage tank into a carburetor or receiving tank, and to provide means to cooperate with the pump means for venting or by-passing either the suction or discharge side of the pump to normally render the pump inefective, except when the level of the liquid in the carburetor or receiving tank reaches or drops below a predetermined height. In other words, this object of my invention is to make the effects of the suction or discharge of the pump ineffective except when the level of the liquid in the carburetor or receiving tank reaches a predetermined amount.

Many other objects and advantages of the construction herein shown and described will be obvious to those skilled in the art from the disclosure herein given.

To this end my invention consists in the novel construction, arrangement and combination of parts herein shown and described, and more particularly pointed out in the claims.

In the drawings, wherein like reference characters indicate like or corresponding parts.

Fig. 1 is a vertical sect-ion through the receiving tank, showing the manner of connecting it to the storage tank and pump;

Fig. 2 isan enlarged sectional view of the upper portion of the receiving tank;`

Fig. 3 is a top plan view ofthe receiving tank; v

Fig. 4 vis a side elevation of a modified form of device;

Fig. 5 is a fragmentary section of the storage tank shown in Fig. 4, illustrating the manner of connecting the ejector thereto;

Figv 6 is a vertical section of another form of receiving tank, with the pump mounted in the cover thereof;

, Fig. 7 is a fragmentary top plan view of the same;

Fig. 8 vis a fragmentary section of the upper portion of a receiving tank, showing a modified valve and valve-operating means from that shown in Fig. 2, and

Fig. 9 is a fragmentary section illustrating a plunger type of pump.

Referring to the drawings, in which the preferred embodiments of my invention are shown, 1 represents a shell or receiving tank, somewhat as shown and described in my copending application, Serial Number 511,- 704, and 2 a storage or supply tank, from which the liquid or fiuid is to be conducted to the receiving tank 1. The receiving tank l has a cover or cap portion 3, the upper end lor top of said part being open and adapted to receive a closure cap 4. Any forms of fastenings means may be used for detachably connecting the various parts together, as for instance the screws 15 and'l shown, and a gasket 14 may be arranged between the parts l and 3, if preferred. The part 3 is divided into a pair of communicating chambers by a transverse web 5, said part having a liquid inlet 6 at one side thereof. At the bottom of the tank there is arranged a liquid outlet 7, as shown, and there is also arranged a drain S having a plug 9 at its lower end, whereby the tank may be drained for cleaning purposes, or the like.

An air inlet passage 10 is formed in the cover part 3, as shown more clearly in Fig 2, the inner end of said passage formed with a valve seat 10. A plug having a constantly open vent 12 therethrough is secured to the cap 4, and a vent 13 is formed through the upper portion of the transverse web member 5,so that when the valve seat 10 'is uncovered, there is a free communication of air between the passage 10 and the conl stantly open vent ports 12 and 13, to the atmosphere.

In orderto conduct the liquid from the storage tank 2 into the linlet 6., there is arranged a pump 17, of any preferred type, with a conduit 16 at its intake side and adapted to extend into the storage tank 2. At the discharge side of the pump is a conduit 18 leading to the liquid inlet 6 of the receiving tank.

The pump 17 is constantly operated by any desired means (notshown), and it is apparent that unless there are means provided to prevent the pump from being ef- `fective in its pumping action the receiving tank 1 would soon be filled and overflow. For this purpose I have frovided venting means or by-passing contro means, whereby the pump is ineffective, even though constantly operated, except when the level of the liquid in the receiving chamber reaches or drops below a predetermined height. A T-niember 19 is arranged intermediate the ends of the intake pipe 16 and has a passage therethrough communicating with the passage 10 in the part 3. When the passage 10 is 'in free communication with the outside atmosphere through the constantly open vents 12 and 13, as shown in Figs. 1 and 2, it is apparent that the intake side of the pump will be vented and preventany of the liquid from the storage tank 2 from being drawn through the pump and discharged into the receiving tank. Obviously the passage 10 could be extended so as to be in direct communication with the atmosphere, in which case the valve 20 would be inwardly of the free end of said passage.

A float 21 is arranged to move vertically in the receiving tank, said float having a stem 22 extending upwardly therefrom. To the free end of the stem 22 there is pivotally secured a rod or arm 23, which is pivoted at its other end, as at 24, to any stationary part of the cover 3. Intermediate the pivoted ends of the arm 23 there is formed an aperture through which is inserted and loosely held a valve 2O adapted to ,seat on the valve seat 10 at the inner end of the air passage" 10. When the valve is in the position shown in Fig. 2, the passage 10 will be closed from communication with the vents 1.2 and 13 and hence the pump will be effective to draw the liquid from the storage tank and dischargeit through the inlet 6. A strainer 11 may be arranged at the inlet 6, as shown in Fig. 2, if so desired.

From the foregoing description it will be seen that when the liquid in the receiving tank is at a suliiciently high level to raise the float and keep the valve 20 from seating on the valve seat 10, the passage 10 will be in free communicatlon with the vents 12 and 13, so that the intake side of the pump will be vented and this will render the pump In Fig. 4 there is shown a modified form of arrangement, wherein the receivingA tank 1 is substantially similar to that previously described. The pump 17 has an intake 25, :from the tank as shown in full lines, or from the atmosphere as shown in dotted hnes, and a discharge pipe 26, the T-connection 19 being arranged intermediate the ends of the discharge pipe 26 so as to communicate with the air passage 10 on the receiving tank. Arranged at the lower end of the storage tank 2 is a liquid outlet 29, and between said liquid outlet and the inlet 6 to the receiving tank 1 is arranged a'pipe or conduit 27. An ejector 28 is arranged at the discharge outlet 29 of the storage tank 2, the action' of said ejector being apparent from Figs. 4 and 5. When the pump is effectlve the ejector will operate to elevate the l1qu1d from the storage tank 2 through the conduit 27 and the inlet 6, into the receiving tank 1.

It is apparent that the ejctor need not be ositioned in the precise location shown in lgs. 4 and 5, but that it may be arranged at any point intermediate the discharge outlet 29 and the liquid inlet 6, that is, it may be at the discharge outlet or at the liquid inlet, or at any point intermediate them.

The action of the system shown in Figs. 4 and 5 is similar to that previously described. When the by-pass is open, the ejector, driven by the pump, will bei ineffective to lift the liquid through the inlet 6, but when the by-pass is closed, the. pump will operate through said ejector to lift the liquid and discharge it into the receiving tank until the liquid thereinA reaches a predetermined amount, whereupon theby-pass will again be opened to render the pump and ejector ineiective. It will be noted that in Fig. 4 the full line drawing` shows the suction side of the pump as drawing air from the tank and not directly from the atmosphere. On damp days the intake of air directly from the atmosphere would be liable to cause .the air to condense when it contacted with the gasoline and fill up the tank with water.

In the modification shown in Figs. 6 and 7. there is shown a tank cover 3, on which is arranged a plunger or piston type of pump, the piston being indicatedr at 32. Operating rods 33 and 34 are arranged to operate said piston,- said operating rods being constantly driven by any 'suitablevmeans (not shown). A closure plug 1S arranged at one end of said closure plug preferably being removable and having a constantly open vent 3l therethrough. A vent and pump discharge communicates with both the liquid inlet and with the vent 31, so that when the valve.

20 is unseated the pump will be ineffective, as it will be vented through the connnunicating openings 35 and 31. The valve 20 is controlled by a float 21 pivoted at 36 to an arm depending from'the cover part 3. When the level of the liquid in the tank l rises to a sufficient height, the float will move the valve 20 oil' its seat and thereby vent the pulnp suction chamber and render the pump ineffective, and when the level has again dropped below the required height, it will tend to move the valve 20 to close the v alve seat and again render the pump effective, and so on. A cheek valve 37 is ar ranged at the inlet 6, so that when the pump is vented, or by-passed, it will be ineifetive to draw the liquid through said inlet. A pin 88 is arranged radially at the end of the valve stem of the check valve 37, and a spring 39 is arranged between the pin 38 and the cover 3, so that the check valve will not be permanently drawn ofi` its seat.

The action vof the device shown in Figs. 6 and 7 is the same as that previously. described. When the vent is open, the suction of the pump will be ineffective to draw the liquid through the inlet 6, and when the valve 20 closes the vent passage, the pump will become effective to draw liquid through the inlet 6, the by-passing of the pump being controlled by the float 21.

In Fig. 8 there is shown a receiving tank 1 substantially similar to that shown in Figs. l, 2 and 3, except that there is a slightly different form of valve and valveoperating means for controlling the vent passage 10. The valve 40 is of the oscillat ing or rotary plug type, and is controlled bya lever 41pivotally connected at one end to the upper end of the float stem 22. The passage 10 may be extended to the outside of the tank so as to directly communicate with the atmosphere, as shown in dotted lines, instead of being vented through the openings 12 and 13, as shown in full.

In Fig. 9 there is diagrammatieally shown a plunger type of pump to be substituted for the rotary type of pump wherever desired. The pump 42 has an intake pipe 25 and a discharge pipe 26 communicating with the pump chamber and operates with the same effect as the rotary pump 17 shown in Fig. 4. The pump 42 is supplied with the usual valves (not shown) at the intake and discharge ports, and is preferably double actmg.

In -all the modifications there is shown a constantly operative pump which is vented or ivy-passed at either its suction or discharge side to render it normally ineffective,

' and controlled b v a float for closing said by' pass to render it effective when the liquid in the receiving chamber reaches or drops below a predetermined level, thus providing means for automatically maintaining the liquid at any predeteianined substantially constant level in the receiving chamber.

Having thus described my invention, it is obvious that various immaterial modifications may be made in the same without departing from the spirit of my invention; hence I do not wish to be understood as limiting myself to the exact form, construction, arrangement and combination of parts herein shown and described, or uses mentioned. l

""lVhat I claim as new and desire to secure bv Letters Patent is :J

l. In a device of the kind described and in combination. a receptacle having an inlet and an outlet, a storage rec-eptacle, a conduit connecting said storage receptacleto the inlet of said first-mentioned receptacle, a constantly operating pump between said receptacles for inducing the flow of fluid through said conduit, a constantly open vent in said first-mentioned receptacle, and conduit means normally closed when the fluid is pumped through said first mentioned conduit and opened for venting said pump to render it ineffective when the fluid in said iirst-n'ientioned receptacle reaches a prede termined level.

2. In a. device of the kind described and in combination, a receptacle having a fluid inlet and outlet, a, storage receptacle, a conduit leading from the storage receptacle to said inlet, a constantly operating pump for inducing the flow of fluid through said conduit, and a valve controlled vent means for circulating air through said conduit when the fluid in said first-mentioned receptacle reaches a predetermined level.

constantly operating pump intermediate the ends of said conduit for inducing the flow of fluid therethrough, and a float in said receiving tank for operating said valve to control said air ley-pass, whereby the pump will be effective to induce flow into the receiving tank when said passage is closed. and will be ineffective when said passage is open.

4. In a. device of the kind described and in combination, a'reeeiving tank having a fluid inlet and outlet, and an air inlet and vent, a storage tank having a conduit leading to said fluid inlet, a valve controlling the passage between said air inlet and vent, a constantly operating, normally ineffective, pump intermediatethe ends of said conduit for inducing the flow of fiuid'therethrough, and a float in said receiving tank for operating said valve to control said air by-pass to close it when the fiuidin the receivin tank reaches a predetermined level, where y the pump will be effective to induce flow mto the receiving tank.

5. In a device of the kind described and in combination, a receiving tank having a fluid inlet and outlet, and an air inlet and vent, a. storage tank having a conduit leading to said fluid inlet, a constantly o erating pump intermediate the ends o said. conduit and tending to induce flow of fluid' therethrough, and means between said pump and receiving tank and controlled by the level of the fluid in the receiving tank for normally venting the pump to render it ineffective.

6. In a device of the kind described and in combination, a receiving tank, a cover there* valve controlling the air-passage through said vent to normally by-pass the air therethrough to render the pump ineffective, and

4to close said passage to render'the pump effective to open said check valve and induce the flow of fluid therethrough when the level of the fluid in said receiving tank reaches a predetermined height.

7. In a device of the kind described and in combination, a receptacle having a fluid inlet and outletand an air inletland vent, a storage receptacle, a conduit leading from the storage receptacle to said fluid inlet, a constantly-operating pump for inducing the flow of fluid through said conduit, said pump having its air intake from the upper portion of said first-mentioned receptacle, and' its discharge leading to said air inlet and to said conduit.. and means for rendering said pump ineffective except when the fluid in said first-mentioned receptacle drops to a predetermined level.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

ANDREW C. Woon.

Witnesses:

Roy HILL, H. C. JACOBS. 

